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water heater: removing anode rod George 02-13-2007
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Posted by George on February 20, 2007, 2:33 pm


wrote:

>> wrote:
>>
>>
>>
>>
>>
>>
>>
>> >> > Just for completeness:
>>
>> >> > As noted, after much effort, I did get the rod out. %xt time, I'll get
>> >> > an impact wrench. 0ut a new (aluminum) rod in. &lushed the tank
>> >> > several times, including 2x with vinegar. .e thing I found is that it
>> >> > flushes much more 'powerfully' if I remove the draincock.
>>
>> >> ....
>
>Did you pour a gallon of vinegar in the heater input line? Was there
>heater full of water at the time? or empty?

Oh, yeah. Tank was empty. I poured a gal of white vinegar into the
anode rod hole (I hadn't put the new rod in), and let it sit overnight.
No water added. That's what the vendor's web site said to do.

When I let that drain, it came a little dirty ('rusty'), so I flushed
with water - as in, run about 5 gal of water into the tank, then take
the draincock off and let it gush out into a bucket. This brought out
'some' (like, a cup or two) of white lumpy stuff. I'm guessing that the
vinegar is supposed to dissolve that.

So, I stuck a wooden dowel down the anode rod hole, and kind of stirred
up the bottom. It felt like it might be plowing through some sort of
sediment. I flushed that with water a few more times, and got out more
lumpy white stuff. The water was a little cloudy, but not 'rusty'.

Then, I did another vinegar flush, as above. After I flushed that with
water, it ran clean.


>Has the rust gone away?

Yes - to my eye, the water is running clean. And, when I let it sit,
nothing settles out of it.

G

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Posted by George on February 19, 2007, 10:47 pm



>
>> Just for completeness:
>>
>> As noted, after much effort, I did get the rod out. Next time, I'll get
>> an impact wrench. I put a new (aluminum) rod in. I flushed the tank
>> several times, including 2x with vinegar. One thing I found is that it
>> flushes much more 'powerfully' if I remove the draincock.
>
>No need for an impact wrench if you wrapped the threads with Teflon tape. It
>still provides protection, can check continuity with a meter if you like.

Yeah, I did that. The impact wrench is for the next water heater,
whenever that might be.

G

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